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Flood in Clark County, Wisconsin
37 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 37 flood events in Clark County, Wisconsin, between 1950 and 2026, spread over 17 years.
September is the busiest month, with 13 of the recorded events. The last 20 years account for 31 events against 6 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.4% of the 2,580 flood events recorded in Wisconsin; its 3.1 per 100 square miles compares with 4.8 statewide.
NCEI attributes 3 deaths in the county to floods and flash floods.
Compared with Wisconsin
| Measure | Clark County | Wisconsin | US |
|---|---|---|---|
| Flood events since 1950 | 37 | 2,580 | 183,559 |
| Per 100 square miles | 3.1 | 4.8 | 5.2 |
| Per 10,000 residents | 10.6 | 4.4 | 5.5 |
| Deaths recorded | 3 | 30 | 2,961 |
| Busiest month | September | June | June |
By year
Seasonality
0Feb
0Mar
1Apr
3May
1Jun
8Jul
7Aug
4Sep
13Oct
0Nov
0Dec
0
Recorded events
All 37 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 7 Jul 2024 | Flash Flood | — | — | — | — | — | County |
| 20 Apr 2023 | Flood | — | — | — | — | — | County |
| 1 Apr 2023 | Flood | — | — | — | — | — | County |
| 15 Jul 2022 | Flash Flood | — | $8K | $120K | — | — | County |
| 14 Jul 2020 | Flood | — | — | — | — | — | County |
| 14 Jul 2020 | Flash Flood | — | $5K | $35K | — | — | County |
| 5 Aug 2019 | Flood | — | — | — | — | — | County |
| 17 Apr 2019 | Flood | — | — | — | — | — | County |
| 14 Mar 2019 | Flood | — | — | — | — | — | County |
| 4 Sep 2018 | Flood | — | $5K | $1K | — | — | County |
| 4 Sep 2018 | Flood | — | $5K | $1K | — | — | County |
| 18 Jun 2018 | Flash Flood | — | $1K | — | — | — | County |
| 18 Jun 2018 | Flash Flood | — | $1K | — | — | — | County |
| 18 Jun 2018 | Flood | — | $1K | — | — | — | County |
| 21 Sep 2016 | Flood | — | $100K | — | — | — | County |
| 21 Sep 2016 | Flash Flood | — | $1.8M | — | — | — | County |
| 21 Sep 2016 | Flood | — | — | — | — | — | County |
| 6 Sep 2015 | Flash Flood | — | $1.1M | — | — | — | County |
| 4 Sep 2014 | Flood | — | — | — | — | — | County |
| 4 Sep 2014 | Flood | — | — | — | — | — | County |
| 4 Aug 2014 | Flash Flood | — | $35K | — | — | — | County |
| 4 Aug 2014 | Flood | — | $2K | — | — | — | County |
| 19 May 2014 | Flood | — | — | — | — | — | County |
| 20 Jun 2012 | Flood | — | $20K | — | 3 | — | County |
| 19 Jul 2011 | Flood | — | — | — | — | — | County |
| 19 Jul 2011 | Flash Flood | — | $15K | — | — | — | County |
| 16 Jul 2011 | Flood | — | $10K | — | — | — | County |
| 23 Sep 2010 | Flood | — | $1.1M | — | — | — | County |
| 23 Sep 2010 | Flood | — | — | — | — | — | County |
| 23 Sep 2010 | Flood | — | $50K | — | — | — | County |
| 23 Sep 2010 | Flood | — | $50K | — | — | — | County |
| 16 Jun 2004 | Flash Flood | — | $143K | $50K | — | — | County |
| 22 Jun 2002 | Flash Flood | — | $345K | $25K | — | — | County |
| 22 Jun 2002 | Flood | — | $75K | $12K | — | — | Forecast zone |
| 1 Aug 2001 | Flood | — | — | — | — | — | County |
| 11 Sep 2000 | Flash Flood | — | $15K | $25K | — | — | County |
| 26 Jun 1998 | Flash Flood | — | $50K | $40K | — | — | County |
Questions and answers
How many flood events has Clark County had?
37 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Clark County?
7 Jul 2024 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Clark County?
The flash flood of 21 Sep 2016, with property damage estimated by NCEI at $1.8M.
How does Clark County compare with Wisconsin for flood?
3.1 events per 100 square miles against 4.8 statewide; the county holds 37 of the state's 2,580 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.